Firstly, this appartment is far away from the city centre, about 20 kms. It is close to a sky train station, but there is no station at the centre and you will need sky train and taxi (or tuk tuk, grab) in order to get to Khao San for instance. Sky train, also stops working at 00:00 and begins again at 06:00, so if you'd like to return after 00:00 at night you will have to pay a lot of money to a taxi + tolls. As about the time you would need getting to the city centre, it is more than 1 hour.
Regarding the interior of the apartment, it was as shown in the photos with a few differences. First of all, the bathroom is small and there is no separate place for the shower, so when you take a shower you end up making quite a lot of a mess in the bathroom. Secondly, there were lots of little cockroaches coming from the pipette.
Considering everything I mentioned, I don't think that staying in this appartment is a good deal.